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When NMIs cannot be enabled, the driver prints a message stating that unambiguously. When they are enabled, the only feedback we get is a message regarding the use of synchronization for ICC_PMR_EL1 writes, which is not as useful for a user who is not intimately familiar with how NMIs are implemented. Let's make it obvious that pseudo-NMIs are enabled. Keep the message about using a barrier for ICC_PMR_EL1 writes, because it has a non-negligible impact on performance. Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200912153707.667731-2-alexandru.elisei@arm.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.